@ Clifford - a lot of the clothing and props are from my own personal collection and I do most of the styling and location scouting as well. So it's really just a case of finding a model (Modelmayhem.com is great for that) that is willing to shoot the ideas I have.
Luckily I've no shortage of people wanting to work with me, so I just pitch an idea, provide the clothes and settle on a location and off we go.
Since I've got a reasonably large collection of clothes and props, I also get a lot of models approaching me wanting to try different styles without having to fork out hundreds, if not thousands, of dollars on the one outfit for one shoot - so there's a fair bit of the models finding me rather than me finding them.